'Spirit of Truth' in the Bible

And I will ask the Father, and He will give you another Advocate to be for ever with you--the Spirit of truth.

"When the Advocate is come whom I will send to you from the Father's presence--the Spirit of Truth who comes forth from the Father's presence--He will be a witness concerning me.

But when He has come--the Spirit of Truth--He will guide you into all the truth. For He will not speak as Himself originating what He says, but all that He hears He will speak, and He will make known the future to you.

Everything that the Father has is mine; that is why I said that the Spirit of Truth takes of what is mine and will make it known to you.